Penrite Shift Eze is a transmission and gear oil additive that has been formulated with added PTFE (Teflon) and molybdenum to provide improved shift performance in gearboxes all while helping to reduce drivetrain noise from transfer cases and differentials. Shift Eze also helps to improve cold shift performance and is ideal for use in applications where increased load protection is required such as competition, off-road and commercial vehicles used in extreme loading situations. Penrite Shift Eze is suitable to use with all types of gear oils and is even compatible for use in limited slip differentials. Shift Eze is not suitable for use in motorcycles fitted with wet clutches or manual transmissions where ATF (Automatic Transmission Fluid) is specified. Not suitable for use in Automatic Transmissions.